Shelf for gas ovens



Dec. 29, 1936. C. R. sPlNE Er Al. 2,066,237

SHELF FOR GAS OVENS #Filed May 27, 1935 2 sheets-sheet 1 i' W Je I 37.2 g5 331?! 75 90 #53 J7 J7 lNvENToRS ATTORNEY Dec. 29, 1936. c. R. sPlNE ET Al.

SHELF FOR GAS OVENS 2 Sheets-Sheet 2 Filed May 27, 1935 INVENTORS` E* Wxz ATTORNEY Patented Dec. 29, 1936 UNITED STATES NT OFFICEA SHELF FOR GAS OVENS Application May 27, 1935, Serial No. 23,791

6 Claims.

Our invention relates, generally, to ovens and more particularly to improvements in shelves for ovens of gas ranges.

In the usual gas ranges of commerce, the heat lg' rises too rapidly to the top of the oven. This condition results in the uneven cooking of food on the a oven shelves, particularly at the top and bottom, and too rapid dissipation of the heat through the top of the oven and the usual vent in said top.

With the foregoing in mind the principle object of our invention is to provide means for retarding the rise of the heat in the oven during the process of cooking, particularly below the food being cooked therein, and distributing the heat 16 uniformly beneath the food whereby the latter is cooked evenly throughout the same.`

Specifically stated the primary object of our invention is to provide a simply constructed shelf adapted. for use in the ovens of ranges of standv2() ard construction and equipped to effect a retarded rise of the heat from the lower part of the oven to the upper part and particularly designed to distribute the heat laterally beneath the food being cooked.

Another object is to provide an oven shelf, for

the purposes above set forth, and which is adjustable as to length and width to compensate for manufacturing irregularities in the oven.

Still another object is to provide a device of the character specied which is strong and durable,

light in weight and economical to manufacture.

Other objects, together with the nature of our improvements and their advantages, will be readily understood when the following description and vclaims are read with Vreference to the accompanying drawings. V

In said drawings:

Figure 1 is a fragmentary view in vertical transverse section of a gas range equipped according to our invention.

Fig. 2 is a similar view in vertical section taken on the line 2-2 of Fig. l looking in the direction indicated by the arrows.

Fig. 3 is a view in horizontal section taken on the line 3-3 of Fig. 2 looking in the direction indicated by the arrows.

Fig. 4 is a view in horizontal section of the oven shelf detached, parts showing in elevation.

Fig. 5 is a fragmentary view in perspective of shelf supporting guides, a heat conducting flue with which the usual gas ovens are equipped, and a closure member for said ue.

Fig. 6 is a fragmentary sectional view taken on 5.5 the line 6 6 of Fig. 4 looking in the direction indicated by the arrows, and drawn to an enlarged scale.

Fig. '7 is a similar view taken on the line 'I-l of Fig. 4 looking in the direction indicated by the arrows. 5

Fig. 8 is a fragmentary View in top plan of the rear edge of the shelf.

Fig, 9 is a similar view of an adjustable ledge plate for the rear edge of the shelf.

Fig. l0 is a fragmentary perspective view of the 10 parts of the oven shelf disassembled.

Fig. 1l is a fragmentary perspective View of one front corner of the shelf and an adjustable ledge member associated with the front ledge of the shelf. 15

Fig. l2 is a view in transverse section of a modication of the invention, and

Fig. 13 is a view in vertical section taken on the line I3--I3 of Fig. l2 lookingin the direction indicated by the arrows. 20

Referring to the drawings and first to the preferred embodiment of our invention illustrated in Figs. 1 to l1, the numeral I designates a portion of a gas range of commerce, 2 the burners thereof and 3 the usual oven equipped with a 25 door 4. The oven 3 is of the usual type embodying inner side, rear and top walls 5, 6 and l, respectively, spaced from the exterior walls 8 of the oven to form a heat conducting chamber 9 surrounding said side, rear and top walls and 30 communicating with a combustion chamber I0 below the bottom walls I I. The side walls 5 have formed therein the usual vertically extending flue portions I2 opening into the oven, and the top and bottom walls l and II are provided with the 35 usual apertures, I3 in the top wall, and I4 in the bottom wall, for the passage of heat through the interior of the oven. The numeral I5 designates the baffle plates at the top of the oven having a purpose well understood and I6 the 40 outlet vent pipe communicating with the chamber 9. On the inside of the walls 5 are the usual opposed, fluted guiding and supporting plates I'I for the shelves of the oven and which extend across the flue portions I2 to form the 45 inner side thereof.

The shelf I8 of our invention comprises upper and lower plates I9 and 20, respectively, preferably formed of sheet metal and secured together at their edges, in a manner presently explained, 50 to form therebetween a shallow heat distributing chamber 2| in said shelf. The upper plate I9 at its rear and side edges is bent to form vertical rear and side walls 22 and 23, respectively, for the shelf terminating in laterally extending rear and side flanges 24 and 25,` respectively, surround- Ving therear and side edges of said shelf and to edge of said plate 2U.

which the lower plate 20 is secured by bending the rear and side edges 26 and 21, respectively, thereof upwardly over said flanges 24 and 25. The front edge of the upper plate I9 is bent downy wardly to form a vertical front wall 28 for said shelf extending below the plate 20 to provide a hand grip portion 29 across the front edge of said shelf for manipulating the latter and which is crimped at its lower edge rearwardly and upwardly around a depending flange 38 on the front Screws 3I, provided with nuts 32, passing through the described rear and side edges of the shelf I8 clamp the said edgestogether. Y

At its side edges the shelf I8 is provided with laterally adjustable ledges 33, respectively, in the form of transversly U-shaped strips of sheet metal fitting over and under the bent edges 21 and provided with slots 34 for Vreceiving the screws 3| so as to be clamped in position by said screws. The

Vfront ends ofthe ledgesv33 are provided with right angularly related end portions 35 for overlapping the ends of the hand grip portion 29 to form lateral extensions of the same when said ledges are adjusted outwardly. At its rear edge the shelf I8 is provided with a similar laterally adjustable ledge3t` having slots 31 therein for receiving the screws 32 at the rear of the shelf and adjustably clamped thereby to the rear edge lof the bottom wall 20. The ends of the ledge 36 are received in the rear ends of the ledges 33, as shown inFig. 4, to prevent said ends of the ledge 36 from being bent downwardly.Y

Within the chamber 2'I of the shelf I8 and extending centrally of said chamber from the rear wall 22 to a suitable point adjacent the wall 2B is a substantially rectangular baille member 31', open at its front and bottom, and comprising laterally Vspaced wallsV 38 terminating at their front ends in' rearwardly inclining end portions Y39 and having lateral flanges 40 by means of which said member is secured as by rivets 4I to the plate 20.V The member 31' is preferably provided with a top plate 42 supporting the plate I9 torreinforce the latter. The-bottom plate I8 is provided with a plurality of aligned apertures 43 communicating with the space within the baille member 31. The rear wall 22 is provided with a plurality of apertures 44 upon opposite sides of said baille member. e Y

VThe described shelf I8 is designed to be mounted on the plates I1 with the ledges 33 supported by said plates and with the-ledge 3B engaging the rear wall 22 and the front wall 28 in position to be engaged by the door 4 so that said shelf forms a transverse partition within the oven fitting snugly therein. By adjusting the ledges 33 and 36 the width and length of said shelf may be varied to obtain such a snug fit, as will be clear, it being understood, of course, that the shelf is built in the approximate width and length of the interior of the oven. Y

The heat rising beneath the shelf I 8 is retarded and in effect concentrated immediately below said shelf. The heat entering the chamber 2l through the apertures 43 is directed by the walls 38 of the bafile member 31' out of the open end of the latter against the front wall 28 of said shelf and around the sides of the chamber 2I, by the inclined portions 39 to find outlets through the apertures 44 in the rear wall 22 of said shelf. As will be manifest the described deflection of the heat in the chamber 2I provides for a retarded flow of the same into said chamber and for uniformly distributing the heat in the chamber immediately below the top wallrI9 of the shelf.

If desired the fiueportions I2 of the side walls 5 may be closed, either at the top or bottom thereof, by means of closure plates 45 adapted to fit into said portions and provided with inner edges 46 bent upon themselves into clip form to clip over either the upperV or lower edges of said plates I1.

In Figs. 12 and `13 a modifiedu form of means has been shown for variably supporting the shelf I8 in an oven, not equipped with supporting plates I1, and comprising the following. A shaft 41 is journaled in the upper part of the oven 3 centrally thereof for endwise Y movement in brackets 48 suitably secured to the top wall 1 of the oven 3. Adjacent'each end of the shaft and fast thereon is a pair of Ysheaves 49. Each pair of sheaves has oppositely wound thereon a pair of chains 50 trained through eyelets 5I in the sides of the oven and secured to the edges of the shelf, as at 52, so that said shelf may be raised` and lowered by rotation of thejshaft 41 `in opposite directions respectively. vThe shaft Y41 is equipped with a hand wheel 53'fast on oneend thereof for rotating and sliding sadshaft in the brackets 48. An angular stop 5411s provided on the shaft 41 for engagement with one of the brackets 48 to hold the shaft IHr against rotation under the weight of the shelf I8, said stop being engageable and disengageable fromsaid bracket by endwise movement of the shaft.

The foregoing constitutes aedetailed description of our invention and it is thought that its operation and advantages will berclear therefrom. e Y It is to be understood however that the-invention is susceptible of modification other than that disclosed without departing from the spirit ofthe invention and that right is herein reserved to such other modifications falling fairly within the scope of the claims appended hereto, g Y a What we claim is: 1. A shelffor ovens comprising, e d tom plates, respectively, connected together at their edges in spaced apart ,relation to form a lbottom plate of said shelf having apertures there-Y in communicating with said flue, and therrst mentioned wall of said chamber being4 apertured upon opposite sides `of said member for 4the passage of heat from said chamber.V

2. A shelf for ovens comprising, top and bottom plates, respectively, co'nnected'together at their edges in spaced apart Vrelation tov form a heating chamber therebetween having side and end walls, respectively, a baflie member extending forwardly in said chamber Ycentrally thereof and from the rear wall and including spaced apart side walls forming a flue therebetween having a closed rear end andopening onto the front wall, the bottom plate of said shelf having apertures therein communicating with Asaid.

" flue for the passageof heat intosaid chamber .tp and:

spectively, secured together at their edges in spaced apart relation to form therebetween a heating chamber having front, rear and side walls, respectively, a baiile member extending part way across said chamber centrally thereof and from said rear wall and including spaced apart side plates forming a flue therebetween having a closed rear end and opening onto the front wall of the chamber, the bottom plate of Said shelf having apertures ltherein communicating with said flue for the passage of heat into said chamber through said flue, exit openings in the rear wall of the shelf for the passage of heat out of said chamber, said shelf being provided with a rearwardly extending ledge below said last apertures for spacing said rear wall from the rear of the oven to permit heat from said chamber to pass above said shelf.

4. A shelf for transversely partitioning an oven and comprising, top and bottom plates, respectively, secured together at their edges in spaced apart relation to form therebetween a heating chamber having front, rear and side walls, respectively, a baie member extending part way across said chamber centrally thereof and from said rear wall and including spaced apart side walls forming a flue therebetween opening onto the front wall of the chamber, the bottom plate of said shelf having apertures therein communicating with said ue for the passage of heat into said chamber through said fiue, the rear wall of the chamber being apertured upon opposite sides of the ue for the passage of heat out of said chamber, said shelf being provided with a rearwardly extending ledge below said last apertures for spacing said rear wall from the rear of the oven to permit heat from said chamber to pass above said shelf,V and the side walls of said member at the open end of the flue being provided with outwardly and rearwardly inclined portions for deflecting heat from said flue laterally and rearwardly in said chamber.

5. A shelf for ovens comprising top and bottom plates connected together adjacent their edges in spaced apart relation to form a heating chamber therebetween having front, side, and rear walls, respectively, a baille member extending forwardly in said chamber centrally thereof from said rear wall and comprising a top part supporting the top Yplate of the chamber, and spaced apart side walls forming a flue therebetween terminating short of the front wall of the chamber and in opposed flanges inclined outwardly and rearwardly of said flue and of the same height as said chamber, the rear edge of the shelf being provided with a flange for spacing the rear wall of the shelf from the inside wall of the oven, and said rear wall of the shelf having apertures formed therein upon opposite sides of the baiiie member respectively.

6. A shelf for use in an oven comprising a pair of spaced apart plates connected together adjacent their edges to form a heating chamber therebetween and having a hand grip portion extending across the front edge of the shelf and depending below the same, a baie member disposed within said chamber, and a ledge member disposed at each side of said plates and adapted to be adjusted laterally with respect thereto, each of said ledge members having a projecting flange extending along its front edge outwardly of said grip portion, the grip portion being disposed in snug engagement with the intermediate portion of the oven door and said depending anges on the ledge members snugly engaging the marginal edge portions of the oven door when it isV closed.

CHARLES R. SPINE. LEONARDO CALALUCA. 

